 public class Main {
/*    public static void main(String[] args) {
        int i = 0;
        int j = 0;
        int cont = 0;

        for(i = 2;i<=100;i++){
            for(j = 2;j<i;j++){
                if(i % j == 0){
                   break;
                }
            }
            if(i == j){
                cont++;
                System.out.print(i+" ");
            }
        }
        System.out.println();
        System.out.println(cont);

    }*/

/*     public static void main(String[] args) {
        float flag = 1F;
         int sum = 1;
         for(int i = 2;i<=20;i++){
             sum *= i;
             flag += 1.0 / sum;
         }
         System.out.println(flag);

     }*/

/*     public static void main(String[] args) {
         int i = 2;
         int sum = 1;
         float flag = 1;
         do{
             sum *= i;
             flag += 1.0 / sum;
             i++;

         }while(i < 20);
         System.out.println(flag);
     }*/


/*     public static void main(String[] args) {
         int sum = 0;
         for(int i = 1;i<=1000;i++){
             sum = 0;
             for(int j = 1;j<i;j++){
                 if(i % j == 0){
                     sum += j;
                 }
             }
             if(sum == i) {
                 System.out.println(i);
             }

         }

     }*/


/*     public static void main(String[] args) {
         long sum = 0;
         long num = 8;
         for(int i =0;i<10;i++){
             if(i<1){
                 sum += 8;
                 continue;
             }
             sum *=10;
             sum += 8;
             num += sum;
         }
         System.out.println(num);

     }*/


/*     public static void main(String[] args) {
         int sum = 0;
         int i = 0;
         for(i = 1;i<8888;i++)
         {
             sum += i;
             if(sum >= 8888){
                 break;
             }
         }
         System.out.println(i);

     }*/


/*
     public static void main(String[] args) {

         int i = 8;
         if(i >7){
             if(i<10){
                 System.out.println("hehe");
             }
         }
         else{
             System.out.println("haha");
         }

     }
*/


/*     public static void main(String[] args) {
         for (int i = 1; i < 10; i++) {
             for(int j = 1;j<10;j++){
                 System.out.println(i+"*"+j+"="+i*j);
             }

         }

     }*/

/*     public static void main(String[] args) {
         int i = 2;
         while(i < 10){
             System.out.println(i);
             i++;
         }
     }*/

/*     public static void main(String[] args) {
         int i = 2;
         do{
             System.out.println(i);
             i++;
         }while(i < 10);
     }*/


/*     public static void main(String[] args) {
         int input = 2;
         switch(input){
             case 1:
                 System.out.println("hahahah");
                 break;
             case 2:
                 System.out.println("heiheiheihei");
                 break;
             case 3:
                 System.out.println("lililili");
                 break;
             default :
                 System.out.println("biubiubiuy");
                 break;
         }
     }*/

   /*  public static void main1(String[] args) {
         short a = 128;
         byte b = (byte) a;
         System.out.println("a="+a+",b="+b);

     }

     public static void main(String[] args) {
         int a = 10;
         System.out.println(!a);
     }*/








 }